Improvement in drying citano



EDWIN .PUGH BAUGII, 0E PHILADELPHIA, PENNSYLVANIA.A

The Schedule referred to in these Letters Patent and making part oi the same,

I, EDWIN PUGH Banen, of Philadelphia, 'county of Philadelphia, State of Pennsylvania, have invented V an Improvement in Drying Mineral Guano, 85o., of which the following is a specification. i

Nature and Objects of the Intention'.

My-invention consists of'certain casings arranged upon a bed or receptacle and constructed as fully described hereafter, so that heated air or gases passed into the casings will be thoroughly and uniformly disributed through a mass of material deposited on the My .invention further consists of mineral guano heated by the direct application of heated gases, as a 'new product.

' Descr'ipt'ion'of thc Accompanying Drawing.

Figure 1' is a plan view of apparatus for carrying into effectmy improvement in drying mineral guano and other substances.

Figure 2, a transverse vertical section on the line 1--2, fig. l.

Figure 3, a perspective view of part of the appaparatus drawn to an enlarged scale; and f Figure 4, a perspective view of a modification of my invention.

General Description.'

The line A represents the surface of a platform or wharf, or of leveled ground, on or near which is situated a furnace, ,B, and an exhausting and forcing fan, D, or other equivalent apparatus by which the products of combustion may be withdrawn through a suitable pipe, E, from the furnace and forced through pipes F F F.

'Ou the wharf or platform is placed any desired number of grated or perforated casings, which, as shown in figs 2 and 3, are of a triangular sectional form, and are made in sections, each section consisting of the two grated plates a and l) and plain baseplate d, the latter having slots for receiving the projeetious e e on the lower edges of the plates a. and l), and one of the latterliaving at its upper edge projections f, adapted to slots in the other, so that the plates can be adjusted to the triangular shape represented, and several seetionsarranged so as to form long perforated chambers H H H, three such chambers being shown in the present instance, a branchpipe F from the fan D communicating with the end of each chamber.

Props h, fig. 3, may be used as an additional security for maintaining the grated 4plates a `and b Vin their proper relative position.

The miueral guano of South Carolina, or, as it is sometimes, termed, rock phosphate, is in its original state limpregnated with more or less moisture, and more water is absorbed by it during thernecessary washing and so increases its weight as to reuder its/transportation expensive.

My invention has been designed more 'especially with the view of affording cheap and ready means of drying this guano in the following manner:

. The wetmaterial is deposited ou the platform or I i wharf, so as to' completely inclose the grated casings, as bestobserved on reference to iig. 2, and the products of combustion derived from the furnace B are forced by the fan D, or its equivalent, through the branch-pipes F into the ends of the grated casings,

through the perforations of which the products of f combustion pass freely, and so permeate the mass of guano in which the casings 'are imbedded, as to rapidly absorb its moisture, and by thus lessening its weight, reduce it to the best condition for cheap transportation.

Inasmuch as the grated casings extend above the surface of the receptacle or bed on which the guano' v is deposited, a larger grated surface is obtained, and the gases are more'thoroughly distributed through the mass and penetrate the same more readilythau if the material was deposited directly on iiat grat-k lll O'S.

C'Ihe accumulated entrails and other oial of animals mayalso he dried and rendered transportable by the apparatus, and masses of wet coal, vor'e,'and other minerals maybe economically dried iu the manuel' dcscribed. I prefer to make the grated or perforated casings in sections and of detachable plates, as shown in iig. 3, sothat they can be readily detached from each other, and placed out of the way when not required for use. u

These plates may-be so hinged together as to beA readily adjusted to form one triangular sectionv or to ,folded together when not required.

1. A series of grated casings arranged upon and extending above the surface of a bed or receptacle for guano or other. material, and communicating with ilues for passage of heated gases, substantially as de j scribed.

2. Mineral guano treated by the direct application of heated gases, as a new product. l

v In testimony whereof Ihave signed my name to this specific-ation in the presence of two subscribing witnesses.

EDWIN P. BAUGH.

Witnesses:

F. B. RICHARDS, HARRY SMITH. 

